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Magnetic field hyperactivity during the early Neoproterozoic: A paleomagnetic and cyclostratigraphic study of the Katav Formation, southern Urals, Russia

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Geoscience Frontiers 2023年第4期14卷 42-56页

作者： Inessa V.Golovanova Konstantin N.Danukalov Raushaniia Yu.Salmanova Natalia M.Levashova nikita P.Parfiriev Nina D.Sergeeva Joseph G.Meert Institute of Geology-Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences(IG UFRC RAS) Russia Geological Institute Russian Academy of SciencesMoscowRussia Department of Earth and Planetary Sciences Neil Opdyke Paleomagnetic LaboratoryUniversity of FloridaGainesvilleFL 32611United States

We present a detailed magnetostratigraphic and cyclostratigraphic profile through the Riphean(Tonian)Katav Formation in the southern *** study confirms the primary nature of the magnetization in these *** cyclostratigraphic study identified several orbital periods including the 405 ka long *** allows us to quantify the reversal frequency in the Katav and our estimates range of 7–12 reversals per million *** on our study,we identify an interval of magnetic field reversal hyperactivity in the Neoproterozoic *** estimates for the Katav are contentious and range somewhere between 800 Ma and 900 Ma based on carbonate Pb-Pb ages and stable isotope *** paleomagnetic poles obtained in this study of the Katav(and overlying Inzer)Formation do not fit anywhere on the Baltica apparent polar wander path between 1100 Ma and 900 ***,they lie 90away from the 900 Ma segment of the *** tentatively estimate their age to be closer to 800 Ma and perhaps confirm a previously hypothesized pulse of rapid true polar wander between 825 Ma and 790 Ma.

关键词： Magnetostratigraphy Cyclostratigraphy Hyperactive reversal True polar wander Tonian

计及电动汽车接入的区域综合能源系统双层日前协调优化调度

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电力建设 2023年第5期44卷 23-33页

作者：李玲曹锦业 nikita Tomin 杨德昌郑颖颖中国农业大学信息与电气工程学院北京市100083 俄罗斯科学院西伯利亚分院能源研究所新西伯利亚630090

规模化电动汽车(electric vehicles,EV)的接入对区域综合能源系统(regional integrated energy system,RIES)优化调度提出了新的挑战,文章提出了计及分布式电源和电动汽车源荷双向互动的RIES双层日前优化调度策略。首先,采用蒙特卡洛法... 详细信息

规模化电动汽车(electric vehicles,EV)的接入对区域综合能源系统(regional integrated energy system,RIES)优化调度提出了新的挑战,文章提出了计及分布式电源和电动汽车源荷双向互动的RIES双层日前优化调度策略。首先,采用蒙特卡洛法模拟电动汽车无序充电,在此基础上利用分时电价引导负荷侧的电动汽车有序充电;然后,基于电力市场和碳交易市场,充分考虑源侧风光出力和负荷侧价格型需求响应等过程中的不确定性因素,以日系统经济成本和碳交易成本最低为目标进行系统优化调度,并采用改进粒子群算法进行求解;最后,通过仿真算例分析可得,文章提出的双层优化调度策略能够有效降低系统的负荷峰谷差,在实现电动汽车有序充电的同时,能够有效提升用户用电满意度、降低碳排放量以及增加系统经济效益。

关键词：电动汽车有序充电分时电价需求响应双层日前调度策略

Highly efficient transient stimulated Raman scattering on secondary vibrational mode of BaWO_(4) crystal due to its constructive interference with self-phase modulation

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Chinese Optics Letters 2023年第3期21卷 113-117页

作者： Igor Kinyaevskiy Valeri Kovalev Pavel Danilov nikita Smirnov Sergey Kudryashov Andrey Koribut Andrey Ionin P.N.Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991Russia

An exceptionally high stimulated Raman scattering[SRS]conversion efficiency to the first Stokes component associated with the secondary[low-frequency and low intensity]vibrational mode v2[~330 cm^[-1]]was observed in a BaWO4 crystal in a highly transient regime of *** effect takes place in the range of pump pulse energy from~0.1 to~0.5μJ with maximum energy conversion efficiency up to 35%at 0.2μ*** nature of the observed effects is explained by interference of SRS and self-phase modulation,where the latter is related to a noninstantaneous orientational Kerr nonlinearity in the BaWO4 crystal.

关键词： stimulated Raman scattering secondary vibrational mode self-phase modulation ultrashort laser pulses transient phenomena

Evolution of Physical and Chemical Properties of Phenolic Resin-Based Carbon/Carbon Composites Reinforced with Short Discrete Fibers during Pyrolysis

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Journal of Chemistry and Chemical Engineering 2014年第8期8卷 778-785页

作者： Nashchokin Anton Malakho Artem Garadja nikita Rogozin Alexey Chemistry Department Moscow State University Moscow 119991 Russia Aleksin Chemical Plant Aleksin 301361 Russia

In the present work, novolac phenolic resin-based composites reinforced with short discrete carbon fibers were pyrolized at different temperatures from 400℃ to 900℃. Their physical and chemical properties were studied, linterfacial bonding between the matrix and carbon fiber and its influence on mechanical properties of analyzed composites were analyzed. Experimental results demonstrated strengthening of interfacial bonding with increase of pyrolysis temperature. Evolution of failure behavior was observed.

关键词： Carbon/carbon composite phenolic resin interfacial bonding pyrolysis carbonization.

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俄罗斯能源出口贸易研究

俄罗斯能源出口贸易研究

作者： Kazakov nikita（尼基塔）哈尔滨工业大学

学位级别：硕士

俄罗斯油气资源储量丰富,开发潜力巨大,不仅可以满足俄罗斯的基本生活和生产需要,还可以形成强大的出口能力。俄罗斯凭借强大的能源储备、大规模的油气资源出口实现了经济的稳定、复兴和增长。能源资源已经成为影响俄罗斯当前和未来发... 详细信息

俄罗斯油气资源储量丰富,开发潜力巨大,不仅可以满足俄罗斯的基本生活和生产需要,还可以形成强大的出口能力。俄罗斯凭借强大的能源储备、大规模的油气资源出口实现了经济的稳定、复兴和增长。能源资源已经成为影响俄罗斯当前和未来发展的关键性因素。随着亚太地区能源消费能力的快速增长以及俄罗斯东部大开发战略的实施,俄罗斯能源对外贸易的发展关系不仅影响到俄罗斯国内能源产业发展、国内宏观经济发展以及对整个世界能源体系产生深远的影响。俄罗斯能源出口贸易伙伴主要是欧盟、日本、美国和中国,从对俄欧、俄日、俄美、俄中能源贸易现状的分析中,可以发现俄罗斯能源出口贸易发展中存在着一系列问题。而导致这些问题出现的主要原因在于能源产品结构单一,其中石油天燃气在能源贸易中占主导地位、能源效率差异较大、能源利用率很低;管道等运输基础设施不足,能源开采与运输成本过高,导致能源发展潜力受限;加上俄罗斯能源领域相关法律制度不完善,能源管理体制落后及执行力差等能源法规与政府管理体制因素制约了俄罗斯能源合作的进一步发展。另外,国际政治经济形势的变动对俄罗斯能源出口也产生了重要的影响作用,由于国际能源价格波动,以及俄与欧美、与东北亚地地缘政治关系也对俄罗斯能源发展带来了挑战。针对俄罗斯能源对外贸易发展中面临的问题,必须制定合理的能源发展战略,发挥俄罗斯国内能源产业投资优势,积极开展俄罗斯与多方能源经贸合作,不断提高俄罗斯能源产业的国际竞争力,促进俄罗斯能源贸易的发展,以此发挥能源贸易对俄国内经济的带动作用。

关键词：能源产品能源出口贸易能源合作

Experimental Simulation of Red Sprites in a Laboratory

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Journal of Atmospheric Science Research 2022年第3期5卷 26-36页

作者： Victor Tarasenko nikita Vinogradov Evgenii Baksht Dmitry Sorokin Laboratory of Optical Radiations Institute of High Current Electronics SB RASTomsk634055Russia

Over the past three decades,research of high-altitude atmospheric discharges has received a lot of *** paper presents the results of experimental modeling of red sprites during a discharge in low-pressure *** initiate ionization waves in a quartz tube,an electrodeless pulse-periodic discharge fed by microsecond voltage pulses with an amplitude of a few kilovolts and a repetition rate of tens of kHz were *** this case ionization waves(streamers)have a length of tens of *** main plasma parameters were measured at various distances along the *** measurements confirm the fact that ionization waves propagate in opposite directions from the zone of the main electrodeless discharge,just as it happens during the formation of red sprites.

关键词： Red sprites Experimental modeling Streamer discharge in air Low pressures

Liquid Metal Heat Transfer in an Inclined Tube Affected by a Longitudinal Magnetic Field

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Journal of Iron and Steel Research International 2012年第S1期19卷 487-490页

作者： BELYAEV Ivan A. LISTRATOV Yaroslav I. RAZUVANOV nikita G. Sviridov Valentin G. MPEI-Moscow Power Engineering Institute JIHT-Joint Institute of High Temperatures of the Russian Academy of Science

This paper presents results of hydrodynamic and heat transfer investigations in liquid metal flow affected by a longitudinal magnetic field in an inclined tube with respect to tokamak cooling *** study has been conducted for the tube with slope 1\5 to the horizon which corresponds to the conditions oflTER project in case the LM flow faced longitudinal *** results obtained in the regimes without the MF,may be interesting for the design of nuclear reactors cooled by LM and metallurgical processes.

关键词： heat transfer inclined tube probe measurements longitudinal magnetic field liquid metal

Estimating steatosis and fibrosis: Comparison of acoustic structure quantification with established techniques

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World Journal of Gastroenterology 2015年第16期21卷 4894-4902页

作者： Thomas Karlas Joachim Berger nikita Garnov Franziska Lindner Harald Busse Nicolas Linder Alexander Schaudinn Bettina Relke Rima Chakaroun Michael Trltzsch Johannes Wiegand Volker Keim IFB Adiposity Diseases Leipzig University Medical Center Department of Medicine Neurology and DermatologyDivision of Gastroenterology and RheumatologyUniversity Hospital Leipzig Department of Diagnostic and Interventional Radiology University Hospital Leipzig Internistische Hausarzt- und Diabetologische Schwerpunktpraxis Dr. Relke Department of Medicine Neurology and DermatologyDivision of Endocrinology and NephrologyUniversity Hospital Leipzig

AIM:To compare ultrasound-based acoustic structure quantification(ASQ) with established non-invasive techniques for grading and staging fatty liver ***:Type 2 diabetic patients at risk of nonalcoholic fatty liver disease(n = 50) and healthy volunteers(n = 20) were evaluated using laboratory analysis and anthropometric measurements, transient elastography(TE), controlled attenuation parameter(CAP), proton magnetic resonance spectroscopy(1H-MRS; only available for the diabetic cohort), and *** parameters mode, average and focal disturbance(FD) ratio were compared with:(1) the extent of liver fibrosis estimated from TE and nonalcoholic fatty liver disease(NAFLD) fibrosis scores; and(2) the amount of steatosis, which was classified according to CAP ***:Forty-seven diabetic patients(age 67.0±8.6 years;body mass index 29.4±4.5 kg/m2)with reliable CAP measurements and all controls(age 26.5±3.2 years;body mass index 22.0±2.7 kg/m2)were included in the *** ASQ parameters showed differences between healthy controls and diabetic patients(P0.08,respectively).CONCLUSION:ASQ parameters correlate with steatosis,but not with fibrosis in fatty liver *** estimation with ASQ should be further evaluated in biopsy-controlled studies.

关键词： Transient elastography Non-alcoholic fatty liver disease Liver stiffness Fibrosis score Controlled attenuation parameter

Electro Energetic Technological Control in Eastern Siberia Railway

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Journal of Energy and Power Engineering 2012年第2期6卷 293-298页

作者： Zakaryukin Vasiliy Panteleymonovich Kryukov Andrew Vasilievich Abramov nikita Andreevich Irkutsk State Transport University Irkutsk 664074 Russia

By system analysis and imitating modeling authors show the most effective modern techniques for railway electric systems control. Modem measure technologies PMU-WAMS and smart grid allow to solve real time tasks of centralizing control of railway electric systems. Quantity characteristics of control effectiveness are determined. According to computer modeling the situation approach is available for practical tasks of railway electric system control.

关键词： Electric supplying railway electric traction technological control.